import java.util.Scanner;

public class GoldCoins {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long sum = 0;
        int a[][] = new int[n][n];
        for (int i = 0 ; i < n ; i++){
            for (int j = 0 ; j < n ; j++){
                a[i][j] = sc.nextInt();
            }
        }

        for (int i = 0 ; i < n ; i++){
            for (int j = 0 ; j < n ; j++){

                if (i == 0 && j > 0) {
                    sum += a[i][j];
                }

                if (j==0){

                }
            }
        }


    }
}
